Hot metal mixer



March 22, 1932. J. s. MoHR ET AL 1,850,330

HOT METAL MIXER Filed July 8, 193i 3 Sheets-Sheet l M arch 22, 1932. 1V s, MOHR ET AL 1,850,330

.HUT METAL MIXER FiledvJuly 8. 1931 s sheets-sheet 2 22, 1932. 1, s MOHR T AL 1,850,330

HOT METAL MIXER Filed July 8. 1931 5 Sheets-Sheet 3 Patented Mar. 22, 1932 *UNITED STATES,

PATENT OFFICE JOSEPH s. MOIIR AND WILLIAM G. BORN, on oHIcAc-O, ILLINOIS, AssIGNoRs 'ro JOHN.

Morra e soNs, OF CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS i El@ safety features,

By enclosing the various operating memservice, which can be economically main- HOT METAL MIXER Application led .Tuly 8, 1931. Serial No. 549,378.

Our inventionpertains to those appliances, or so-called hot metal mixers, which comprise receptacles for the molten metal and which may be swung or rocked to deliver the metal I, therefrom through a pouring spout, formw ing part of the metal container, and provided for that purpose.

One object of the invention is the provision of an apparatus of this character with distinct such as means to prevent the occurrence or possibility of a lire hazard by reason of sparks igniting an oil-bath and to preclude the splashing of hot metal due to breakage of parts. f

bers as much as possible, they may be kept well lubricated with resulting small wear, and they are thus maintained comparatlvely free from dirt with its accompanying in-y 20 jurious effects.

A further aim of the invention is to supply a device of this character which is eiiicient and reliable in operation, which is unlikely to become damaged or injured in ordinary tained in proper operative condition, and in which there is adequate accessibility to the various parts. I

To the accomplishment of these and other desirable purposes, the present, preferred embodiment of the invention has been developed and put into service, 'such apparatus being illustrated in the accompanying drawings, forming a part of thisA specification, and to which reference should be had in connection with the following detailed description, like reference numerals having been employed throughout the several views to designate the Y same parts.

In the drawings f. f

Figure 1 is a side elevationof the entire apparatus, certain partsbeing broken away or shown in section to illustrate the construction more clearly;

Figure 2 is a plan view of the drive mechanism for the oscillatory, hot metal receptacle, with some of the cradles and'their supporting-rollers omitted'to show the structure more 5o fully;

Figure 3 is an end view of the appliance with parts broken away; and

Figure 4 isa fragmentary view presenting a modified lmeans for operating the cover or closure for the inlet.

Referring to these drawings, it will be perceived that on a suitable foundation 11, such as reenforced concrete or the like, two aligned electric-motors 12 and 13, through iiexible couplings 14 and 15,-operate a fullyenclosed, worm-gear, speed-reduction mechanism 16 between them and connected by a shaft 17 and associated coupling 18 to a similarly adequately-enclosed, double-reduction, herringbone-gear unit 19, which, through a coupling 21, rotates amain-shaft 22 divided into sections connected together by appropriate couplings 23 and 24.

Motor y13 and its shaft, by means of suitable gearing 25, is operatively united with a nonreversing air-engine 26 of known type which comes into operation as a'safety means, in case, by accident, the electric current supply should be temporarily cut off from the motors.

Shaft 22 revolves in a number of bearins 27, 28, 29, 30, 31 and 32, and it is equipped with three pinions 33, 34 and 35 for rocking the mixer by means hereinafter set forth.

At the sidesof such shaft, a plurality of pillar-blocks or bearing-members 36 are located in two, aligned groups or series, and

each of such members is equipped with a rocker-shaft or roller 37 on which a cradle 38 is rockingly supported, eachy such cradle carrying a pair of antifriction, flanged rollers 39, 39 which support the mixer, characterized as a whole 41.

The mixer, the lower portion ofwhich is of cylindrical shape, comprises a metal shell 42 suitably lined with refractory material 43, such shell being embraced within reenforcing circular bands 44,44 in register with, and supported on, the corresponding cradle rollers 39, 39, the upperends of such bands 44 being tied or connected together above the flattened top or arch of the mixer by tie-bars 45, 45. c f

, Fastened to the sides of three of such encasing and encircling bands 44 are the corresponding numbery of gear-segments 46 vin Ymesh with, and adapted to be Yoperated by,

the correlated pinions 33, 34 and 35, whereby rocked backto normal position.

Onits relatively-flat top, the mixer has two inlet oradmission openings 47,' each fitted with a refractory-lined cover or closure 48 rockingl mounted at 49 on an arm 51 hinged connected at 54-to the arm,-and joined, at its other extremity, at 55 to an arm,.56 fixed on the ,end of a shaft 57 mounted inbea'ring's V58, 58 and revolved by anelectrio-rnotor 59,

working through a double-reduction, worm'- gear'speed-reducer'l. f Y

From the illustration, it will be .clear that l each cover 48 has its own independent operltin `mechanism ofthenature described. y

Midway between the pair of inlet openings 47, 47, at one side,'the mixer has a pouring spout-62 oflthe usual construction, through which the molten contents'of the receptacle are .adapted tol be discharged Vupon rocking f jtheffcontainer to accomplish the specified result.

1, As is *clearlyl illustrated, the cross tie-bars v lctassupportsfor other bars, the Whole constituting 'a Vfitting framework for carrying ther'cover-operatng mechanisms described and other parts of kthe ystructure. Y

Inlordjer to strengthen and stiftenV the constructionfand to assisty in supporting the arched top 63 of the container, appropriatelyshaped plates 64 are employed between the channel tie-bars 45 and the metal Shell 65 ofthe'mixer top 63such platesjbeing secured y has been illustrated.

to the specified metal casing 65,'to the cross- Y bars4j5, and tothe upperend'parts of 'the :bands yor strips 44vby vangle-bars 66, 67y and 68,' respectively, on` opposite sides of the plates, fthe whole, vin effect, constituting stifening andisupporting webs.

In Fi urek 4 a somewhat diii'erent and preferred orm'of cover-operating mechanism In .thisl case,-a bent, su porting armor a'rmsllisoi-fare hinged at 2'on a'bracket or bracketsfi onithe topof the mixer, and thev Inlet opening cover 74 is joined tothe part y 71 .by ak pin4 and slot connection' 75, a link 76 hingedV to the cover at 77, also having 'a' pin ',ndwslot connection'V 78'lwith thepart or 'pmtslik v j,

As-1in the previous case, the electric, motor'- rvend, .and such arm, by a link 82, is connected Vtk'ythe member or members 71.

close theOpeningr with Awhich it' is yassociated yowing to its capacity forf limitedplaywith v lthe'fpartson'which'.itis mounted. f

a .illustratedin the drawings.A

From the foregoing, it will be apparent Y that either cover or closure may be raised by the actuatingy means set forth and the hot Imetal introduced into the container, and,

mechanism, the pinions being rotated bythe A y `y main shaft on which they are mounted, the at' 5 2 an adapted to be'lactuated by a link 53V shaft, ofcourse, ,beingy revolved i by i the ypair of motors through rthe speedreducing mechanism. i

terminate the operationof the'imotors'ftvthe proper time. f f v 1. L

Y :In case, the Velectric.currentlshould.fail or becut oi` at an inopportunemomennas, for example, when the mixer ispouri'ng'rout the automatically-acting limit switches 83,183 to y hot molten metal, it can still .be readilygmfturned to its normah'nony-'pourin'g positionby i.

resorting yto the non-reversing `air-engine 26,

stitfut'e for themotrskiy` Y a It will Vbe observed that-the variousparts of theoperating mechanism, are encased or Y which then temporarily acts aspthepower subfy enclosed insubstantial measure, thus assuring n adequate lubrication, the exclusionl of dirt, and the eliminationof possibility of any of the lubricant baths in which the'moving parts operatebecoming ignited by sparks.

" .Furthennoreall of the elements of the `mechanism ae' comparatively readily acces-` sible for replacementsvwhen such are required due to their `wearing :out in service. i The invention is defined inthe appended claims, but it is to be borne in ymind that itis l susceptible ofte. variety of embodiments andV is not necessarily` limited to the precise'and exact Y"structural'ffdetafilsv herein described and Y In other words, rsubstantial 'changes' may befmade in the illstrated construction' Without departure frmfthe principlesv vof Vthe finventien and. Witheet l the lossr or sacrifice 0f any `of its materialbenets or,advantages.

l Insome it maybe desirable` to equip thehspoutj mouth with a cover-,or closure, and

in Figure )3' such a constructionihas been f shovv'fn,I comprising a 'suitable-shaped lcover V102y hung on chains 101, ,101m attohedto' a fixed or stationarysupportlO), 'so that when4 the 'mixerfis inv its Ynon-pouring position shown, its'spout is closed by' the/"cover, when theniixerf'turns, its 'spout rocksr away from the relatively, but netm'c'tly,station ary-cover, .which has 'a certain/amount of play byY reason l of f slight "stack iny `the Uarrying chainswhen the cover rests .cnthe spout.

providing the mixer withy an inlet, or admission yopening on each side of itsfdelivery-spout, either opening may be used for the introduction of the hot metal, and, by

careful choosing of the openings for use, a

more uniform mixture may be had when the melts vary materially in quality.

Whereas, the mixer operating mechanism has been characterized as non-reversible, by this is meant that the mixer cannot operate the driving means, although the latter, of

course, is capable of rocking the mixer in Op;

posite directions.

We claim: A

l. In a hot metal mixer, the combination of a container adapted to receive the molten metal and having a pouring-spout through which it may be discharged, said container comprising a metal-shell lined with refractory material, the lower portion of said container being of cylindrical shape, its top begn ing relatively fiat, bands encircling said cylindrical part and extending up beyond said top, tie-bars cross connecting together the upwardly-extended ends of said bands over said top, web-plates between said tie-bars and the container top, means securing said web-plates to said top, tie-bars, and upper portions of said bands, and means to rock said container on said bands.

2. In a hot metal mixer, the combination of a container adapted to receive Jthe molten metal and provided with a pouring-spout through which it may be discharged, means rockinglysupporting said container, means to rock said container to initiate and to terminate the pouring operation, and a substantially stationary closure for said spout and away from which the spout rocks when turned to start the pouring operation.

In witness whereof we have hereunto set 40 our hands.

WILLIAM G. BORN. JOSEPH S. MOHR. 

